Interestingly - We are the opposite to your scenario! My husband and I earned equal salaries when we first married, however his career really took off and he has soared into a very well paid position. Due to this, we both agreed there was no point me working when babies came along and I was a SAHM for a decade.
Fastforward to all the kids being at school and my husband desperately wanted me to continue being the Housewife, not return to any work… So that I could do so all the housework, carry the mental load, all the school runs, be around for all school holidays, kids sickness, iron his shirts etc. So that he could continue his job without having to worry about anything else. However this was not the life for me!
So we had to find a compromise we could both agree on. It’s taken us a few years to get the right balance. Our three kids are 10-14 now and I work 20 hours per week. My husband would still prefer I didn’t work, but he understands I need it for my mental health, to feel like an equal partner, to feel like I contribute to the family. He has slowly started doing a few household chores, does a couple of school runs a week, does some laundry, takes the kids to some of their evening clubs/sports etc….. but I obviously still do the lions share since I work less. And we are both now happy with our current set up.
I only earn a little over minimum wage. My husband earns over 10 times per hour than I do! So there really is little point me working financially, but I want my husband to respect me and not feel like I am lesser than him. I want him to see us as a team. I don’t want to be his hired help support human…. as I know his respect for me would diminish over time.
It sounds like your wife feels differently than me - she loves being a housewife. So I suggest you need to calmly talk to each other about finding a compromise that you can both be happy with. Could you suggest she starts by working 1-2 days a week and see how she finds that. Her confidence in finding and holding a job has probably been hit by so many years out of the workplace. She will likely need you to help her search and to boost her confidence.
Gently explain to her that you want to feel like a team, that you are both contributing (even if her income would be far less than yours). It’s not about the money I imagine, but feeling like you are not being taken advantage of. She needs to see that resentment is starting to build within you and that is not a good scenario for either of you - resentment is the destroyer of marriage. I hope that if you can explain this all to her calmly, without it feeling like an attack on her, that she will be able to see your point of view and make some changes.